CMSSW_7_5_6_patch1

Changes since CMSSW_7_5_6:

Merge due to automatic forward port compare to previous

1. 12530 from @slava77: add HI-related products for pp runs in event content keep statements (same as #12520) reconstruction created: 2015-11-20 21:13:36 merged: 2015-11-21 09:31:15

2. 12507 from @richard-cms: add customization to switch to Global ECAL reco from multifit reconstruction created: 2015-11-19 19:09:51 merged: 2015-11-21 10:31:12

3. 12497 from @cferraio: ZDC unpacker, cleaner commit comparison operations reconstruction created: 2015-11-19 14:10:30 merged: 2015-11-20 15:31:20

4. 12487 from @mverwe: adds HLTPixelActivityHFSumEnergyFilter module (superseeds #12483) hlt created: 2015-11-18 22:24:08 merged: 2015-11-20 00:51:38

CMSDIST Changes between Tags REL/CMSSW_7_5_6/slc6_amd64_gcc491 and REL/CMSSW_7_5_6_patch1/slc6_amd64_gcc491:

compare to previous